It's so funny that the Ohkura will adamantly deny a relationship with his gacha girls to people. When we all know they wouldn't mind that much now besides like Luna. But I can already sense that Estel is gonna have to pursue more for our protag to stop putting on airs.
I will never hunderstand this trope of having the dude start screaming that a girl is not their girlfriend... It's weird. Correct them if it bother you, but you dont need to get worked up this much.